Applied Statistics in Business and Economics
Applied Statistics in Business and Economics
5th Edition
ISBN: 9780077837303
Author: David Doane, Lori Seward Senior Instructor of Operations Management
Publisher: McGraw-Hill Education
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Chapter 14, Problem 1CR

Explain the difference between (a) stocks and flows; (b) cross-sectional and time-series data; (c) additive and multiplicative models.

(a)

Expert Solution
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To determine

Explain the difference between stocks and flows.

Explanation of Solution

Stocks:

Stocks represents the data, it will be recorded at the particular point of time.

For example, a retail company checks the inventory at every end of month.

Flows:

Flows represents the data, it will be recorded during a period or interval of time.

For example, a retail company checks the whole income for a month and it will consider the whole month income.

(b)

Expert Solution
Check Mark
To determine

Explain the difference between the cross-sectional and time-series data.

Explanation of Solution

Cross-sectional data:

Cross-sectional data represents the data which is observed from the various studies at a same point of time.

Time-series data:

Time-series data represents the data which is observed over the periods of time.

(c)

Expert Solution
Check Mark
To determine

Explain the difference between the additive and multiplicative models.

Explanation of Solution

Additive model:

The additive model in time series decomposes the data into four parts, such as components trend ((T), cycle (C), seasonal (S) and irregular (I)) in the form of  Y=T+C+S+I. Here, Y denotes the additive model.

Multiplicative model:

The multiplicative model in time series decomposes the data into four components, such as trend ((T), cycle (C), seasonal (S) and irregular (I)) in the form of  Y=T×C×S×I. Here, Y denotes the multiplicative model.

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Applied Statistics in Business and Economics

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